Vapor-heater for internal-combustion engines.



, F. l. HncHcocK. VAPOR HEATER FOR INTERNAL COMBUSTION ENGINES.

' APPuATIoN man www a, ma. f

' Patented Apnjl, 1915. @EN w11 y ...I A fr WITNESSES:

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- vapor heater; Fig. 2

vapor heater and FRANK I.

HITCHCOCK, or entbehren?, QQNNECTICUT- VAPOR-HEATER FOR INTERNAL-430111311515911 @1N ES- To all whom may concern Be it known that I, FRANK I. HITCHCOCK,

'citizen of the United States, residing'at Bridgeport, in the countyof Fairfield and State of Connecticut, have new and useful Improvements in Vapor- Hea-ters for Internal-Combustion Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as Will'enable others skilled in the art to which it appertains to make and use the same.

My invention relates to a device to be used in connection with internal combustion engines, adapted to use the heavier hydrocarbon distillates, like kerosene.

The object of my invention is to maintain a uniform temperature at all times of the ignitible vapor passing into the engine.

Referring to the drawings, in ,which the same figures and letters of reference indicate like parts throughout the several views, Figure 1 represents a detail view is a broken view of an engine and exhaust pipe, showing the vapor heater connected with the engine; and Fig. 3-

is an enlarged central sectional View of the l its connections with the carbureter, and brokenview of the carbureter, engineand intak"y pipe from the eX- haust pipe drum; and Fig. 4 is a cross sectionalview of the heater on line 4 4, of Fig. 1.

The'vapor heater 1 has the heat-intake port 2 through which heat enters into the chamber 3, and the outlet port 4 through which heat passes to the carbureter 5,

through elbows 6 and 7, and the elbow 8` connects the carburetor with the vport 9 of the heater. The vertical pipe, or inclosed passage 10, elbow 11, and the body or casing 1 are shown integral as the most convenient construction to insure a gastight structure.

he short heater with the engine 18.

The exhaust pipe 14 passes through the exhaust pipe -drum 15, in the usual manner and the heated air in the drum is drawn up through the pipe 16, to the vapor heater 1 at a temperature regulated by the controller 17, adapted to slide on the pipe 16 and control thc amount of cold air entering the holes 18 in the pipe, so as to regulate the temperature of the heated air entering the chamber' 3 of the vapor heater 1," l

It has been demonstrated from practice,

Specification of Letters Ietent.

Appncamn mea May e, 19.13. serial in. rifatta invented certain y of the gas or.

pipe or nipple 12, connects the.

'Patented Apr.. ia, raie..

with the use of heavier distillatealike kerosone, that thebest results are obtained when th vapor enters the cylinder at a tempera- `turc or about 125 degrees. .It iS a Well known fact that hot nir, when .leaving the carbureter, will' fall in tcm @rature below the point at which it entere, @Wing t0 the unavoidable drop in temperatur@ 0f the V21- porized distillates. It is, therefore, abso lately essential that the tern erature of the hot air admitted to chamber E, must be high enough to compensate for. this loss of heat at the discharge end of the carbureter, so as to maintain a uniform and unvariable temperature of the vapor entering the engine cylinder. To illustrate this, let it be supposed that the temperature of the hot air entering chamber 3 is 175 degrees, and the fall of temperature at the discharge end of the carbureter is 50 degrees. It will thus be readily seen that the mean unvarying temperature in said chamber and in the pipes leading from thence to the carbureter, and also in pipe 10, will be 125 degrees, which as before mentioned, is about the proper working temperature for the vapors entering the cylinder. As the point at which the fall of temperature varies in different carbureters, the intake nozzle 2 may be located at any height best calculated to bring the hot air in direct contact with that part ot the pipe 10 where the chill caused by the fall of temperature takes place. The thermostat 20, Fig. 1 will indicate the temperature in chamber 3, which temperature can be regulated and maintained by the controller 17 as before mentioned.

While I show the vapor heater detachably connected with the carbureter, it will be readily seen that they could be made inte gral with equally as good results, for tho mode of connection or construction is merely a matter of economy or convenience.

Having thus described my invention, what I claim is 1. The combination with an engine and carbureter of having a hot air chamber and a hot air inlet, a manually operated controller for regulating the temperature of the heated air entering said chamber, a hot air outlet from said chamber to the carburetor, and an inclosed an interposed vapor heater hto passage in the chamber directly connecting heater connecting thevcarbureter With the engine, said heater having a chamber and aranged so that a mean uniform temperature is maintained in said chamber and' outlet connections between Said carbureter and engine.

In testimony whereof I affix my signature in presence of two witnesses.

FRANK I. HITCHCOCK.

Witnesses:

C. M. GADENIER, JAMES FEELEY. 

